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Diffstat (limited to 'src/openvpn/platform.c')
-rw-r--r--src/openvpn/platform.c272
1 files changed, 147 insertions, 125 deletions
diff --git a/src/openvpn/platform.c b/src/openvpn/platform.c
index 6343647..952d633 100644
--- a/src/openvpn/platform.c
+++ b/src/openvpn/platform.c
@@ -5,7 +5,7 @@
* packet encryption, packet authentication, and
* packet compression.
*
- * Copyright (C) 2002-2010 OpenVPN Technologies, Inc. <sales@openvpn.net>
+ * Copyright (C) 2002-2017 OpenVPN Technologies, Inc. <sales@openvpn.net>
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License version 2
@@ -39,21 +39,25 @@
#include "platform.h"
/* Redefine the top level directory of the filesystem
- to restrict access to files for security */
+ * to restrict access to files for security */
void
-platform_chroot (const char *path)
+platform_chroot(const char *path)
{
- if (path)
+ if (path)
{
#ifdef HAVE_CHROOT
- const char *top = "/";
- if (chroot (path))
- msg (M_ERR, "chroot to '%s' failed", path);
- if (platform_chdir (top))
- msg (M_ERR, "cd to '%s' failed", top);
- msg (M_INFO, "chroot to '%s' and cd to '%s' succeeded", path, top);
-#else
- msg (M_FATAL, "Sorry but I can't chroot to '%s' because this operating system doesn't appear to support the chroot() system call", path);
+ const char *top = "/";
+ if (chroot(path))
+ {
+ msg(M_ERR, "chroot to '%s' failed", path);
+ }
+ if (platform_chdir(top))
+ {
+ msg(M_ERR, "cd to '%s' failed", top);
+ }
+ msg(M_INFO, "chroot to '%s' and cd to '%s' succeeded", path, top);
+#else /* ifdef HAVE_CHROOT */
+ msg(M_FATAL, "Sorry but I can't chroot to '%s' because this operating system doesn't appear to support the chroot() system call", path);
#endif
}
}
@@ -61,34 +65,38 @@ platform_chroot (const char *path)
/* Get/Set UID of process */
bool
-platform_user_get (const char *username, struct platform_state_user *state)
+platform_user_get(const char *username, struct platform_state_user *state)
{
- bool ret = false;
- CLEAR (*state);
- if (username)
+ bool ret = false;
+ CLEAR(*state);
+ if (username)
{
#if defined(HAVE_GETPWNAM) && defined(HAVE_SETUID)
- state->pw = getpwnam (username);
- if (!state->pw)
- msg (M_ERR, "failed to find UID for user %s", username);
- state->username = username;
- ret = true;
-#else
- msg (M_FATAL, "cannot get UID for user %s -- platform lacks getpwname() or setuid() system calls", username);
+ state->pw = getpwnam(username);
+ if (!state->pw)
+ {
+ msg(M_ERR, "failed to find UID for user %s", username);
+ }
+ state->username = username;
+ ret = true;
+#else /* if defined(HAVE_GETPWNAM) && defined(HAVE_SETUID) */
+ msg(M_FATAL, "cannot get UID for user %s -- platform lacks getpwname() or setuid() system calls", username);
#endif
}
- return ret;
+ return ret;
}
void
-platform_user_set (const struct platform_state_user *state)
+platform_user_set(const struct platform_state_user *state)
{
#if defined(HAVE_GETPWNAM) && defined(HAVE_SETUID)
- if (state->username && state->pw)
+ if (state->username && state->pw)
{
- if (setuid (state->pw->pw_uid))
- msg (M_ERR, "setuid('%s') failed", state->username);
- msg (M_INFO, "UID set to %s", state->username);
+ if (setuid(state->pw->pw_uid))
+ {
+ msg(M_ERR, "setuid('%s') failed", state->username);
+ }
+ msg(M_INFO, "UID set to %s", state->username);
}
#endif
}
@@ -96,41 +104,47 @@ platform_user_set (const struct platform_state_user *state)
/* Get/Set GID of process */
bool
-platform_group_get (const char *groupname, struct platform_state_group *state)
+platform_group_get(const char *groupname, struct platform_state_group *state)
{
- bool ret = false;
- CLEAR (*state);
- if (groupname)
+ bool ret = false;
+ CLEAR(*state);
+ if (groupname)
{
#if defined(HAVE_GETGRNAM) && defined(HAVE_SETGID)
- state->gr = getgrnam (groupname);
- if (!state->gr)
- msg (M_ERR, "failed to find GID for group %s", groupname);
- state->groupname = groupname;
- ret = true;
-#else
- msg (M_FATAL, "cannot get GID for group %s -- platform lacks getgrnam() or setgid() system calls", groupname);
+ state->gr = getgrnam(groupname);
+ if (!state->gr)
+ {
+ msg(M_ERR, "failed to find GID for group %s", groupname);
+ }
+ state->groupname = groupname;
+ ret = true;
+#else /* if defined(HAVE_GETGRNAM) && defined(HAVE_SETGID) */
+ msg(M_FATAL, "cannot get GID for group %s -- platform lacks getgrnam() or setgid() system calls", groupname);
#endif
}
- return ret;
+ return ret;
}
void
-platform_group_set (const struct platform_state_group *state)
+platform_group_set(const struct platform_state_group *state)
{
#if defined(HAVE_GETGRNAM) && defined(HAVE_SETGID)
- if (state->groupname && state->gr)
+ if (state->groupname && state->gr)
{
- if (setgid (state->gr->gr_gid))
- msg (M_ERR, "setgid('%s') failed", state->groupname);
- msg (M_INFO, "GID set to %s", state->groupname);
+ if (setgid(state->gr->gr_gid))
+ {
+ msg(M_ERR, "setgid('%s') failed", state->groupname);
+ }
+ msg(M_INFO, "GID set to %s", state->groupname);
#ifdef HAVE_SETGROUPS
- {
- gid_t gr_list[1];
- gr_list[0] = state->gr->gr_gid;
- if (setgroups (1, gr_list))
- msg (M_ERR, "setgroups('%s') failed", state->groupname);
- }
+ {
+ gid_t gr_list[1];
+ gr_list[0] = state->gr->gr_gid;
+ if (setgroups(1, gr_list))
+ {
+ msg(M_ERR, "setgroups('%s') failed", state->groupname);
+ }
+ }
#endif
}
#endif
@@ -138,33 +152,37 @@ platform_group_set (const struct platform_state_group *state)
/* Change process priority */
void
-platform_nice (int niceval)
+platform_nice(int niceval)
{
- if (niceval)
+ if (niceval)
{
#ifdef HAVE_NICE
- errno = 0;
- if (nice (niceval) < 0 && errno != 0)
- msg (M_WARN | M_ERRNO, "WARNING: nice %d failed: %s", niceval, strerror(errno));
- else
- msg (M_INFO, "nice %d succeeded", niceval);
-#else
- msg (M_WARN, "WARNING: nice %d failed (function not implemented)", niceval);
+ errno = 0;
+ if (nice(niceval) < 0 && errno != 0)
+ {
+ msg(M_WARN | M_ERRNO, "WARNING: nice %d failed: %s", niceval, strerror(errno));
+ }
+ else
+ {
+ msg(M_INFO, "nice %d succeeded", niceval);
+ }
+#else /* ifdef HAVE_NICE */
+ msg(M_WARN, "WARNING: nice %d failed (function not implemented)", niceval);
#endif
}
}
/* Get current PID */
unsigned int
-platform_getpid ()
+platform_getpid()
{
#ifdef _WIN32
- return (unsigned int) GetCurrentProcessId ();
+ return (unsigned int) GetCurrentProcessId();
#else
#ifdef HAVE_GETPID
- return (unsigned int) getpid ();
+ return (unsigned int) getpid();
#else
- return 0;
+ return 0;
#endif
#endif
}
@@ -174,12 +192,16 @@ void
platform_mlockall(bool print_msg)
{
#ifdef HAVE_MLOCKALL
- if (mlockall (MCL_CURRENT | MCL_FUTURE))
- msg (M_WARN | M_ERRNO, "WARNING: mlockall call failed");
- else if (print_msg)
- msg (M_INFO, "mlockall call succeeded");
-#else
- msg (M_WARN, "WARNING: mlockall call failed (function not implemented)");
+ if (mlockall(MCL_CURRENT | MCL_FUTURE))
+ {
+ msg(M_WARN | M_ERRNO, "WARNING: mlockall call failed");
+ }
+ else if (print_msg)
+ {
+ msg(M_INFO, "mlockall call succeeded");
+ }
+#else /* ifdef HAVE_MLOCKALL */
+ msg(M_WARN, "WARNING: mlockall call failed (function not implemented)");
#endif
}
@@ -187,20 +209,20 @@ platform_mlockall(bool print_msg)
* Wrapper for chdir library function
*/
int
-platform_chdir (const char* dir)
+platform_chdir(const char *dir)
{
#ifdef HAVE_CHDIR
#ifdef _WIN32
- int res;
- struct gc_arena gc = gc_new ();
- res = _wchdir (wide_string (dir, &gc));
- gc_free (&gc);
- return res;
-#else
- return chdir (dir);
+ int res;
+ struct gc_arena gc = gc_new();
+ res = _wchdir(wide_string(dir, &gc));
+ gc_free(&gc);
+ return res;
+#else /* ifdef _WIN32 */
+ return chdir(dir);
#endif
-#else
- return -1;
+#else /* ifdef HAVE_CHDIR */
+ return -1;
#endif
}
@@ -208,25 +230,25 @@ platform_chdir (const char* dir)
* convert execve() return into a success/failure value
*/
bool
-platform_system_ok (int stat)
+platform_system_ok(int stat)
{
#ifdef _WIN32
- return stat == 0;
+ return stat == 0;
#else
- return stat != -1 && WIFEXITED (stat) && WEXITSTATUS (stat) == 0;
+ return stat != -1 && WIFEXITED(stat) && WEXITSTATUS(stat) == 0;
#endif
}
int
-platform_access (const char *path, int mode)
+platform_access(const char *path, int mode)
{
#ifdef _WIN32
- struct gc_arena gc = gc_new ();
- int ret = _waccess (wide_string (path, &gc), mode & ~X_OK);
- gc_free (&gc);
- return ret;
+ struct gc_arena gc = gc_new();
+ int ret = _waccess(wide_string(path, &gc), mode & ~X_OK);
+ gc_free(&gc);
+ return ret;
#else
- return access (path, mode);
+ return access(path, mode);
#endif
}
@@ -234,15 +256,15 @@ platform_access (const char *path, int mode)
* Go to sleep for n milliseconds.
*/
void
-platform_sleep_milliseconds (unsigned int n)
+platform_sleep_milliseconds(unsigned int n)
{
#ifdef _WIN32
- Sleep (n);
+ Sleep(n);
#else
- struct timeval tv;
- tv.tv_sec = n / 1000;
- tv.tv_usec = (n % 1000) * 1000;
- select (0, NULL, NULL, NULL, &tv);
+ struct timeval tv;
+ tv.tv_sec = n / 1000;
+ tv.tv_usec = (n % 1000) * 1000;
+ select(0, NULL, NULL, NULL, &tv);
#endif
}
@@ -250,67 +272,67 @@ platform_sleep_milliseconds (unsigned int n)
* Go to sleep indefinitely.
*/
void
-platform_sleep_until_signal (void)
+platform_sleep_until_signal(void)
{
#ifdef _WIN32
- ASSERT (0);
+ ASSERT(0);
#else
- select (0, NULL, NULL, NULL, NULL);
+ select(0, NULL, NULL, NULL, NULL);
#endif
}
/* delete a file, return true if succeeded */
bool
-platform_unlink (const char *filename)
+platform_unlink(const char *filename)
{
#if defined(_WIN32)
- struct gc_arena gc = gc_new ();
- BOOL ret = DeleteFileW (wide_string (filename, &gc));
- gc_free (&gc);
- return (ret != 0);
+ struct gc_arena gc = gc_new();
+ BOOL ret = DeleteFileW(wide_string(filename, &gc));
+ gc_free(&gc);
+ return (ret != 0);
#elif defined(HAVE_UNLINK)
- return (unlink (filename) == 0);
-#else
- return false;
+ return (unlink(filename) == 0);
+#else /* if defined(_WIN32) */
+ return false;
#endif
}
FILE *
-platform_fopen (const char *path, const char *mode)
+platform_fopen(const char *path, const char *mode)
{
#ifdef _WIN32
- struct gc_arena gc = gc_new ();
- FILE *f = _wfopen (wide_string (path, &gc), wide_string (mode, &gc));
- gc_free (&gc);
- return f;
+ struct gc_arena gc = gc_new();
+ FILE *f = _wfopen(wide_string(path, &gc), wide_string(mode, &gc));
+ gc_free(&gc);
+ return f;
#else
- return fopen(path, mode);
+ return fopen(path, mode);
#endif
}
int
-platform_open (const char *path, int flags, int mode)
+platform_open(const char *path, int flags, int mode)
{
#ifdef _WIN32
- struct gc_arena gc = gc_new ();
- int fd = _wopen (wide_string (path, &gc), flags, mode);
- gc_free (&gc);
- return fd;
+ struct gc_arena gc = gc_new();
+ int fd = _wopen(wide_string(path, &gc), flags, mode);
+ gc_free(&gc);
+ return fd;
#else
- return open(path, flags, mode);
+ return open(path, flags, mode);
#endif
}
int
-platform_stat (const char *path, platform_stat_t *buf)
+platform_stat(const char *path, platform_stat_t *buf)
{
#ifdef _WIN32
- struct gc_arena gc = gc_new ();
- int res = _wstat (wide_string (path, &gc), buf);
- gc_free (&gc);
- return res;
+ struct gc_arena gc = gc_new();
+ int res = _wstat(wide_string(path, &gc), buf);
+ gc_free(&gc);
+ return res;
#else
- return stat(path, buf);
+ return stat(path, buf);
#endif
}
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